18382319 has 2 divisors, whose sum is σ = 18382320. Its totient is φ = 18382318.

The previous prime is 18382297. The next prime is 18382337. The reversal of 18382319 is 91328381.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18382319 - 2¹² = 18378223 is a prime.

It is a super-2 number, since 2×18382319² = 675819303635522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18382369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9191159 + 9191160.

It is an arithmetic number, because the mean of its divisors is an integer number (9191160).

Almost surely, 2^18382319 is an apocalyptic number.

18382319 is a deficient number, since it is larger than the sum of its proper divisors (1).

18382319 is an equidigital number, since it uses as much as digits as its factorization.

18382319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 18382319 is about 4287.4606703735. The cubic root of 18382319 is about 263.9166355624.

The spelling of 18382319 in words is "eighteen million, three hundred eighty-two thousand, three hundred nineteen".